From TFA: "We study 20 trouble areas, from nuisances—such as squeaky brakes and broken interior trim—to major bummers, such as potentially expensive out-of-warr

From TFA: "We study 20 trouble areas, from nuisances—such as squeaky brakes and broken interior trim—to major bummers, such as potentially expensive out-of-warranty engine, transmission, EV battery, and EV charging problems. [...] We weigh the severity of each type of problem to create a predicted reliability score for each vehicle, from 1 to 100."